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Raytheon Company made fresh apple pies to give to science and math teachers working within a 3.14 mile radius of the company's Waltham office in honor of Pi Day (March 14, or 3.14). Recognition of Pi Day is a part of the company's MathMovesU® initiative that encourages kids to pursue careers in the science, technology, engineering and math fields. (Aynsley Floyd/AP Images for Raytheon Company)

Raytheon Company made fresh apple pies to give to science and math teachers working within a 3.14 mile radius of the company's Waltham office in honor of Pi Day (March 14, or 3.14). Recognition of Pi Day is a part of the company's MathMovesU® initiative that encourages kids to pursue careers in the science, technology, engineering and math fields. (Aynsley Floyd/AP Images for Raytheon Company)